Thermodynamic Properties of Alkanediols+Acetates at 298.15 K

Authors: Canosa J.M.; Rodríguez A.; Iglesias M.; Orge B.; Tojo J.

Source: Journal of Thermal Analysis and Calorimetry, Volume 52, Number 3, 1998 , pp. 915-932(18)

Publisher: Springer

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Abstract:

In this work we present experimental values of the density, refractive index, speed of sound, isentropic compressibility and liquid-liquid equilibria of the binary mixtures (methyl acetate, ethyl acetate, propyl acetate, and butyl acetate) with (1,2-ethanediol, 1,2-propanediol, or 1,3-propanediol) at 298.15 K and atmospheric pressure, as a function of mole fraction. From the experimental values, the corresponding excess and deviation values were computed (excess molar volumes, changes of refractive index on mixing, and changes of isentropic compressibility), variable-degree polynomials being fitted to the results. The validity of different estimation methods for predicting the experimental values of physical properties was tested. The limiting partial excess molar volume of the components in each binary mixture was determined by means of predetermined Redlich-Kister parameters. Group contribution method (UNIFAC-Dortmund) was applied in order to compare their capability in predicting the experimental equilibria values.

Keywords: binary mixtures; butyl acetate; 1,2-ethanediol; ethyl acetate; experimental; liquid-liquid equilibria; methyl acetate; prediction; 1,2-propanediol; 1,3-propanediol; propyl acetate; thermodynamic properties